Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. CHARLES M. LEO DDS
NPI 1740243195
Dentist - General Practice in Hauppauge, NY

Q: What is Charles Leo's NPI number?

The NPI number for Charles Leo is 1740243195. It was assigned to this individual provider in the NPPES registry on April 7, 2006.

Q: What is Charles Leo's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

Q: When was this NPI record last updated?

The NPPES record for Charles Leo was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.

Active since April 07, 2006

103 WINDWATCH DR, HAUPPAUGE, NY 11788(631) 232-0706 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 16, 2026.

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About Dr. Charles M. Leo Dds NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. CHARLES M. LEO DDS (NPI 1740243195) is an individual general practice provider in Hauppauge, New York, licensed in New York (049126) and active in the NPI registry since April 2006.

NPPES Registry Identity

NPI1740243195

Entity TypeIndividualMale

Primary Taxonomy1223G0001X

Provider Legal NameDR. CHARLES M. LEOCredential: DDS

Location Address103 WINDWATCH DRHauppauge, NY 11788-3349

Mailing Address103 Windwatch DrHauppauge, NY 11788-3349 · (631) 232-0706

Phone(631) 232-0706

Sole ProprietorNo

Enumeration DateApril 7, 2006

Last NPPES UpdateJuly 13, 2026

✔ NPI 1740243195 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyDentist · General PracticeDental Providers

Taxonomy Code1223G0001X

License✔ Licensed in NY · 049126

Definition

A general dentist is the primary dental care provider for patients of all ages. The general dentist is responsible for the diagnosis, treatment, management and overall coordination of services related to patients' oral health needs.

103 WINDWATCH DR, Hauppauge, NY 11788

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Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Charles Leo's NPI number?

The NPI number for Charles Leo is 1740243195. It was assigned to this individual provider in the NPPES registry on April 7, 2006.

Where is Charles Leo located?

Charles Leo practices at 103 Windwatch Dr, Hauppauge, NY 11788. The listed phone number is (631) 232-0706.

What is Charles Leo's specialty?

The primary specialty registered for this NPI is Dentist, specializing in General Practice, with taxonomy code 1223G0001X.

When was this NPI record last updated?

The NPPES record for Charles Leo was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 36 days ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.